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Detection while drilling device and method for rock mass property evaluation

A detection device and property technology, which is applied in the field of geotechnical engineering investigation and construction devices, can solve the problems of rock mass quality grade time-consuming, money-consuming and labor-intensive, and achieve the effect of solving the bottleneck of geotechnical investigation.

Pending Publication Date: 2022-04-22
ANHUI HUIZHOU GEOLOGY SECURITY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the phenomenon that the existing indoor test to evaluate the quality level of engineering rock mass consumes time, money and labor. It tries to direct

Method used

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  • Detection while drilling device and method for rock mass property evaluation
  • Detection while drilling device and method for rock mass property evaluation
  • Detection while drilling device and method for rock mass property evaluation

Examples

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Embodiment 1

[0063] Example 1: The on-site environment is cutting coal seams, and the collected vibration signals are as follows: image 3 As shown, a total of 11 IMF components are decomposed, among which c1-c10 are high-frequency to low-frequency signals, r11 is the residual component, and the energy of each IMF component is calculated and normalized, as shown in Figure 6 shown.

Embodiment 2

[0064] Example 2: The on-site environment is cutting mudstone, and the collected vibration signals are as follows: Figure 4 As shown, a total of 11 IMF components are decomposed, among which c1-c10 are high-frequency to low-frequency signals, r11 is the residual component, and the energy of each IMF component is calculated and normalized, as shown in Figure 7 shown.

Embodiment 3

[0065] Example 3: The on-site environment is cutting sandstone, and the collected vibration signals are as follows: Figure 5 As shown, a total of 11 IMF components are decomposed, among which c1-c10 are high-frequency to low-frequency signals, and r11 is the residual component. The energy of each IMF component is calculated and normalized, as shown in Figure 8 shown.

[0066] From Figure 6-8 It can be clearly seen from the normalized results of the results that there are obvious differences in the energy distribution of cutting different lithologies, and it can still be intuitively found that the energy for cutting coal seams accounts for a small proportion of high-frequency components and a large proportion of low-frequency components; cutting mudstone and cutting When sandstone is used, the high-frequency energy accounts for a large proportion, while the low-frequency energy is relatively small, and the high-frequency components are more abundant when cutting sandstone; ...

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Abstract

The invention discloses a while-drilling detection device and method for rock mass property evaluation. The while-drilling detection device comprises a pipe body (1); the exploring tube (2) is arranged in the tube body; the acceleration sensor (3) is arranged in the middle of the exploring tube; and the data processing module (4) is used for processing signals acquired by the acceleration sensor. The method has the beneficial effects that the detection while drilling for evaluating the property of the engineering rock mass is realized, and the bottleneck problem of geotechnical investigation for evaluating the property of the engineering rock mass in engineering drilling is solved.

Description

technical field [0001] The invention relates to the field of geotechnical engineering investigation and construction devices, in particular to a detection-while-drilling device and method for rock mass property evaluation. Background technique [0002] In recent years, with the continuous development of the people's economy, people's living standards have been greatly improved, and infrastructure construction has been more perfect. Among them, various geotechnical projects are actively carried out: rock mass slope engineering, tunnel engineering, cavern engineering. At the same time, in order to complete engineering design and construction more quickly, safely and efficiently, many national or industry standards have been proposed and implemented to address these issues at home and abroad. These codes ensure the standard design and safe construction of various geotechnical engineering problems. Among them, the quality assessment of engineering rock mass has become the most...

Claims

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Application Information

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IPC IPC(8): G01N3/32G01N3/06G01H17/00
CPCG01N3/32G01N3/06G01H17/00
Inventor 童世杰兰鹏波杨玉冰许翠红黄飞龙王大鹏黄宝田吴天雄
Owner ANHUI HUIZHOU GEOLOGY SECURITY INST